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update documenation (pdf)
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genplus.pdf
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genplus.txt
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genplus.txt
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×××-–—————————————————————————————————-———————————————————————————————————-×××
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·gGGgø
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—————— ·gg• gGee• gGGg ×× ———————————
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þg þ¨ þ¨ g ×
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——— þg øg þEeeø þgggg gge·e• ggg•· þ ggg•· ———
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þgG gg þe þ¨ Ng þ· g¨ þi gg¨
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— ·gG ggg þg· þ gg þg g××Sg þg gSggg —
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—————— ¨þggg¨ ¨gggg• þ g ¨g×××× ¨g þ× ¨gg ———
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·•ggg ·•gg
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————————P —— L — U S ———————
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softdev.tehskeen.com
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ø°º–––————————————————————————————————————————————————————————————————————×·.
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°Ø¨–; -×× description ××-
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·/ –––––———— –––––––––– ––—————––––––—— ——–––––– –––––—————
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Genesis Plus emulates the Sega's Genesis/Mega Drive system. It was
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originally created by Charles MacDonald and ported to the Nintendo GameCube
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by The "Genesis Plus" Team. It is an open source emulator and a community
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project which aims to bring you blast processing into the past.
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Using this "emulator" you will be able to enjoy all of your classic 16bit
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games in all of their glory. GenesisPlus has been converted from a PC
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based platform to run on the GameCube's proprietary PPC Gekko processor
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and features customized code to give you the best gaming experience
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possible.
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This port is based on Genesis Plus 1.2 sourcecode but it's also featuring a lot of
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modifications & additions to improve games compatibility, emulation accuracy
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and various peripheral supports. See changelog.txt for the whole history.
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... Features ...
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. accurate & full speed Sega Genesis emulation
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. Stereo Sound (@48 kHz)
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. PAL Megadrive (50Hz) timings support
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. 1~4 Players support
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. 6-Buttons gamepad support
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. Sega TeamPlayer & EA 4-Way Play support
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. J-Cart support (autodetected)
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. partial Sega Menacer support (autodetected for Menacer 6-in-1 game)
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. Freeze State support
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. SRAM support
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. serial EEPROM support (used by a few games as backup RAM)
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. ROM banking support (Super Street Fighter 2)
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. External RAM banking support (Phantasy Star 4, Legend of Thor,…)
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. Game Genie codes support
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. ROM Information Screen
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. Zipped roms support
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. Interleaved roms support (.smd)
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. Load roms from SDCARD or DVD (4.7GB DVD support for Wii users)
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. Load/Save SRAM and FreezeState files (compressed) from/to Memory Card & SDCARD
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. SRAM autoload feature
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. SDLOAD or IPL reboot feature
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ø°º–––————————————————————————————————————————————————————————————————————×·.
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°Ø¨–; ×-× installation ×-×
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·/ –––––———— –––––––––– ––—————––––––—— ——–––––– –––––—————
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The emulator is provided as a .dol which is a Gamecube Executable. You only need to load and run
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the DOL on your GC or WII (Gamecube controller is needed) using various methods (Bootable DVD, SDLOAD,...)
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If you have no idea on how to load&run a DOL, please go here on follow the available guides:
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http://modyawii.tehskeen.com/ (Booting Homebrew Section)
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SDCARD users should create a directory named "genplus" at the root of the SDCARD.
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Inside this directory, you have to create then a subdirectory named "roms" to put all your roms.
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You should also create a subdirectory named "saves" where SRAM and FreezeState files will be saved.
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If using a DVD to load the roms, the format of the image you burned must be ISO9960
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or you won't be able to read from it. The maximal readable size is 1.35GB for Gamecube users
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and 4.7GB for Wii users.
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IMPORTANT: When putting roms either on DVD or SDCARD, it is recommended to use subdirectories as there is
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a limit of 1000 files per directory.
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ø°º–––————————————————————————————————————————————————————————————————————×·.
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°Ø¨–; -×× usage -××
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·/ –––––———— –––––––––– ––—————––––––—— ——–––––– –––––—————
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You'll start off with the main introduction screen and after pressing "A"
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you will be at the main menu. Note that at anytime during gameplay you can
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return to the main menu by tapping on that little Z button (you know, the
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one on your controller).
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Pressing 'L + Z' Triggers during Gameplay will execute a "Soft Reset".
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This should be like pressing the RESET button on a real Genesis.
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This is needed by some games to unlock special features and by the X-Men
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game to complete the "Mojo's Crunch" level.
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Pressing 'B' in any menu will get you back to the previous screen.
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Of course it's a menu so you have yourself a few things to choose from.
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So here's a list and what they do.
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PLAY GAME: Takes you into or back to the game.
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-----------------------------------------------------------------------------------
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GAME INFOS: Shows basic ROM information
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-----------------------------------------------------------------------------------
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This screen shows some basic information for the loaded ROM.
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Of note is the supports area at the bottom of the list.
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Use Up/Down buttons or Analog Stick to scrolldown the screen.
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If the ROM supports 6-button gamepads, they are automatically selected for you.
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Otherwise, the standard 3-button pad is used. (This can also be forced in Joypad Config menu)
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RESET GAME: Performs a soft-reset on the genesis virtual console
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-----------------------------------------------------------------------------------
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LOAD NEW GAME: Let you load a new game from DVD or SDCARD
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-----------------------------------------------------------------------------------
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When entering the rom selection menu (DVD or SDCARD), following controls are used:
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. A button : load the selected file
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. B button : go up one directory
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. Z button : quit the file selection menu
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. L/R triggers : go down/up one full page
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. Left/Right buttons or Analog stick : scroll the selected entry's filename when it can't be full displayed
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. Up/Down buttons or Analog stick : select previous/next file
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* Load from DVD:
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****************
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A DVD browser is displayed. Navigate and select your ROM from here.
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IMPORTANT: Your DVD must be in ISO9660 format
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* Load from SDCARD:
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*******************
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A SDCARD browser is displayed. Navigate and select your ROM from here.
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IMPORTANT: To load roms from SDCARD, you have to use a SDCARD adapter in MC SlotA
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On the SDCARD, roms must be initially placed in /genplus/roms subdirectory
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In both cases, the maximum number of files per directory (DVD or SDCARD) is 1000.
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It is *recommended* to use subdirectories.
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EMULATOR OPTIONS: Let you configure various options
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-----------------------------------------------------------------------------------
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Misc Options:
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*************
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X and Y are to try to compensate for TVs with high overscan, or if
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you just want to play on a smaller area.
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VDP Latency is used to be more accurate in term of VRAM write timing,
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it is required by some games (Chaos Engine...) to be displayed properly
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(ON by default)
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DMA Timing is used to be more accurate in term of DMA copy to V-RAM timing,
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it is required by some games (Legend of Galahad...) to be displayed properly
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(ON by default)
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ALT. timing let you modify the line rendering timing. This is needed by some games
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(Lotus 2 RECS) to prevent display glitches
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(OFF by default, automatically set when specific rom is detected)
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CPU Mode let you force the CPU speed for the game:
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* AUTO: orignal CPU speed is automatically detected
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* NTSC: 60hz Genesis display
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* PAL: 50Hz Genesis display
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The game will automatically be be reloaded after you change this setting.
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REGION let you force the region setting for the game:
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when changing region setting, some games may display different things but also may not load
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if they have some internal region detection code.
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* AUTO: orignal game region is automatically detected
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* EUR (europe 50Hz), USA (usa 60Hz), JAPAN (japan 60Hz) or JAPAN_PAL (japan 50Hz)
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The game will automatically be be reloaded after you change this setting.
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SRAM AUTOLOAD let you enable/disable automatic SRAM loading when starting a new game.
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The detection order is: MCARD (SLOTA) > MCARD (SLOTB) > SDCARD (SLOTA) > SDCARD (SLOTB)
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Sound Options:
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**************
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PSG VOLUME let you adjust the global volume level for the PSG output (0~200%)
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FM Volume let you adjust the global volume level for the FM output (0~200%)
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Default values depends on the current FM & PSG core and are automatically set when switching between cores.
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BOOST VOLUME let you modify the overall sound level (0~4x).
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This could be useful when adjusting FM and PSG relative levels.
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Setting those values too high may produce some bad effects.
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HQ YM2612 is only useful when selecting Gens FM core, in order to have the most accurate YM2612 emulation.
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FM CORE let you choose which YM2612 emulation core to use, both have specific issues with some games:
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* GENS is the core used in Gens, a famous Genesis emulator for PC platforms
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* MAME is the one used in MAME (DEFAULT)
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PSG CORE let you choose which PSG emulation core to use:
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* MAME is the one used in MAME
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* SMSP is the one developped by Maxim from smspower.org (DEFAULT)
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Configure Joypads:
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******************
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Allows you to configure the joypads.
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Here you can remap all 6 buttons, and adjust the Analog stick
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sensitivity. A lower value is more sensitive.
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IMPORTANT: the Analog Stick is also used when emulating the Sega Menacer lightgun,
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so you may want to reduce the sensibility when playing the Menacer 6-in-1 game
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TYPE let you choose the type of the emulated Genesis gamepads (3-Buttons or 6-Buttons)
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Genesis Plus automatically detects and set this option if the current game supports 6-Buttons but
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you can also force use of 3-Buttons gamepads if you prefer.
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* 3BUTTONS: use classic Genesis controllers
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* 6BUTTONS: use 6-Buttons Genesis controllers
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PORTA and PORTB let you choose which type of device to be plugged in each two Genesis input ports:
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* GAMEPAD: single gamepad (3 or 6-buttons, see above)
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* MULTITAP: multiplayer adapter (Sega Teamplayer or EA 4-Way Play)
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* NONE: unplugged
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IMPORTANT:
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1/ MULTITAP should only be plugged if the game is supporting one of the multiplayer adapter.
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Actually, both Sega Teamplayer and EA 4-Way Play adapters are supported.
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Games are usually supporting only one of the above adapters but Genesis Plus automatically detect
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which one should be used.
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3/ Most multiplayer games will work with MULTITAP plugged in PORTA but some of them require
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a GAMEPAD to be plugged in PORTA and the MULTITAP to be plugged in PORTB.
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4/ MULTITAP shouldn't be plugged in both ports since only games supporting more than 4 players
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can take advantage of this configuration. As we only have 4 controllers max. on the Gamecube,
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only the 4 first gamepads will effectively been seen as plugged.
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5/ J-Cart games (Micromachines games, Pete Sampras games, Super Skidmarks) use a built-in adapter
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to enable 2 additional gamepads to be plugged and are not compatible with any of the above adapters.
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So, do not activate MULTITAP with those games, they are automatically detected by the system which
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configure itself to enable up to 4 players support.
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6/ Be sure that all controllers are correctly plugged when you switch on the console, otherwise,
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they won't be detected. Also don't unplug any controllers or you will need to reboot the system.
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7/ Changing Controller Type or Port settings will reset the current game.
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8/ When the 6-in-1 Menacer game is detected, PORTA is forced to NONE and PORTB forced to MENACER, you
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can not change those settings as long as you don't load another rom (previous settings will be restored)
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Game Genie Cheats:
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******************
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Code entry for those of you into cheating :)
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This screen lets you enter up to eight Game Genie codes.
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Use the A key to select/release an entry
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Use the B key to exit.
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MEMORY MANAGER: Let you managed SRAM and FreezeState files
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-----------------------------------------------------------------------------------
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. SRAM Manager: Let you load/save SRAM data from/to the selected device
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. STATE Manager: Let you load/save FreezeState data from/to the selected device
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For each submenu, you can now choose the device type and location.
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Be sure to set this according to your system configuration before saving/loading files.
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. Device: Let you choose the device to use: SDCARD or MCARD
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. SLOT: Let you choose which MC slot to use for the device
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IMPORTANT:
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1/ when using NGC Memory Card in SLOTA, some mounting errors may occur. In this case,
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remove and insert the Memory Card again before trying to save/load anything.
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2/ when using SDCARD, the directory /genplus/saves must exist
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3/ for Wii users, please note that the SD slot can *NOT* be acceeded so use a SD-Adapter in a MC SLot
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STOP DVD MOTOR: Stop the DVD motor and the disc from spinning during playtime
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-----------------------------------------------------------------------------------
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SYSTEM REBOOT:
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-----------------------------------------------------------------------------------
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For users of SDLoad or PSOLoad, you can call this to go back.
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For others, this will reboot the system
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ø°º–––————————————————————————————————————————————————————————————————————×·.
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°Ø¨–; ××- develloper notes ××-
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·/ –––––———— –––––––––– ––—————––––––—— ——–––––– –––––—————
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According to the GNU status of this project, the sourcecode MUST be included in any binary releases you made.
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To recompile the sourcecode, you will need to have installed:
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. DevkitPPC environment
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. libOGC last sources
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You also need to replace the gu_psasm.S file which is located in the /LIBBOGC directory (from the root of libogc source directory)
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with the one included in this release and then recompile/reinstall libogc.
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If you have no idea on how to compile DOLs , please refer to this thread:
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http://www.tehskeen.com/forums/showthread.php?t=2968.
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ø°º–––————————————————————————————————————————————————————————————————————×·.
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°Ø¨–; ××- credits ××-
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·/ –––––———— –––––––––– ––—————––––––—— ——–––––– –––––—————
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coding - the "genesis plus team"
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softdev
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honkeykong
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markcube
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additionnal code and support - eke-eke
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graphics - brakken
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documentation - softdev (chm)
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brakken (user d0x)
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eke-eke (rewrite and changelog updates)
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additional credits:
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• Stephane Dallongeville for the YM2612 core from his GENS project (http://gens.consolemul.com/) and
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for making Gens opensource, which has been an unvaluable help while upgrading this emulator
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• Maxim for his SN76489 core (http://www.smspower.org), already use ins SMSPlus
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• People at SMSPower's and SpritesMind's forums (http://www.spritesmind.net) for their technical help
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(see /doc for original credits)
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×××-–—————————————————————————————————-———————————————————————————————————-×××
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